RN 5.22 Pocket hole problem

FredHirsch · Post by **FredHirsch** » Tue, Mar 20 2007, 6:19PM

Having a problem with a pocket hole and RN 5.22. This seems to have cropped up in the latest RN update. The machine adds a little 'tail' to the pocket which is being cut w/a .25\" bit. Pocket is .26\" wide and 5.5\" long. Have a red circle around the area in question.
Thx,
Fred

Ryan Hochgesang · Post by **Ryan Hochgesang** » Wed, Mar 21 2007, 7:33AM

Hi Fred,

Are you nesting a .twd or a .dxf file? Could you please send me the files related to this issue so that I can take a look?

Files Needed reproduce issue at THM:
- Export file from Control Nesting (Thermwood Controller)
- .esj (if part derived from a job in eCab)
- .esa (if part derived from an Assembly in eCab)
- .dxf (if part created in CAD/CAM system)

Ryan Hochgesang · Post by **Ryan Hochgesang** » Thu, Mar 22 2007, 1:46PM

To update everyone on this situation(Fred has been informed via email):

With the files I was supplied, I did manage to see the issue noted in this posting, in regards to cutting a pocket layer. I put all the information together and submitted to the Software Engineering dept. here and they are working on a fix to release with next CN release. I did do some additional testing and it seems that DADO layer name will work in replacement, until the pocketing layer is fixed.

Forrest Chapman · Post by **Forrest Chapman** » Thu, Mar 22 2007, 4:40PM

Ryan,

I'm running CN 5.12 and have seen this problem with part edits. Will upgrading fix this? Here are pics and twd.

Forrest

Ryan Hochgesang · Post by **Ryan Hochgesang** » Fri, Mar 23 2007, 9:31AM

Forrest,

I took the twd you supplied and performed some tests on it in V5.22 and found that the same thing your seeing now will occur also in V5.22. I would like for you to email me the design file for this cabinet or assembly, so that we can look into this situation in greater depth here. I assume the twd was written from the latest version of eCab?

Email to: program@thermwood.com (Attn: Ryan)

Ryan Hochgesang · Post by **Ryan Hochgesang** » Mon, Mar 26 2007, 10:26AM

Fred,

There has been a Control Nesting update released, which addresses the pocketing issues you were seeing. I performed a test on the actual file you originally submitted and all looked good here. One thing, I did notice your pocket tool setup had a cleanup of .05\" which can not be performed when milling a .26 dia. with a .250 tool. The controller must have at least .001\" for compensation calculation.

Forrest,

I also tested the twd file that you have supplied and there are still issues with cut were the arcs intersect with straight lines. I have requested design files (.esa, .hsf, or .esj) so that I can further analyze the situation. I would like specifically to review the intersection of the arc to straightline intersection within the ecabinet, Part Editor, to see if there is some sort of step or notch in geometry at these particualar locations. These situations possibly created with method used to create panel shapes.

Thanks!

FredHirsch · Post by **FredHirsch** » Tue, Mar 27 2007, 10:20AM

Ryan,
I did the download and it works great. Thank you (thank the programmers for me) for your prompt attention to this.
Fred

Ryan Hochgesang · Post by **Ryan Hochgesang** » Wed, Mar 28 2007, 2:09PM

Forrest,

I've isolated what is causing the cut issues your seeing when running parts on your cnc. It is due to the intangency of lines and arcs when created cut design in the Part Editor of eCab. When the parts are then cut on the CNC, cutter comp. is causing cutter to step into part. In order to fix this, you will need to clean up the geometry in eCabinets when designing part. I've attached a picture to show you what I'm trying to explain and see in Part Editor of eCab. The little step that I've zoomed in on, is measuring approx. .005\" . In any case when using CAD/CAM software, I've seen that geometry must be clean when designing part, especially when wanting to post code and run on a CNC machine.

I hope this information has been helpful. Let us know if you have any additional questions.